Improvement in blind-slat machines



K; KENDALL & L. H. STARK. Improvement in Blind-"Slat Machines. J

' Patented August 15, 187k KENDALL & L. H. STARK. Improvement inBlind-Slat Machines. gfdaalff' Patented August I i- 1871.

' in, Fig. 1.

UNITED STATEs PATENT OEEIoE.

KENDRIGK KENDAL AND LEWIS HENRY STARK, OF GOFFSTOWN, ASSIGNORS TO SAMUELO. FORSAITH, OF MANCHESTER, NEW HAMPSHIRE.

IMPROVEMENT IN BLlND-SLAT MACHINES.

Specification forming part of Letters Patent No. 118,023, dated August15, 1871.

To all whom it may concern:

Be it known that we, KENDRIGK KENDAL and LEwIs HENRY STARK, both ofGoffstown, in the county of Hillsborough and State of New Hampshire,have invented certain new and useful Improvements in Machines forCrimping or Oompressing the Ends of Blind-Slats, of which the followingis a specification:

Before the date of our invention, so far as we know, the crimping-diesin machines of this class were bolted to the bed of the machine, andmuch time was lost and considerable care required in setting the diesproperly to crimp slats of diflerent lengths. Our invention forobviating this difficulty consists in a novel combination and arrangement of parts for quickly adjusting the machine to operate upon slatsof different lengths, and regulating the dies to obtain the amount ofcrimping desired, as will be fully set forth.

Figure l is an elevation of the front of 0111 improved machine. Fig. 2is a top view of the bed of our machine. Fig. 3 is a longitudinalvertical section through the lines of section at y g m, Fig. 2. Fig. 4is a vertical section through the line a: Fig. 5 is a vertical sectionthrough the line ay, Fig. 1. Fig.6 is avertical section through the linea- 2, Fig. 1. V

A represents the frame of the machine; it supports the bed D, and hasbearings for the driving-shaft B, by which the working parts of themachine are operated. The cams O C on the ends of the shaft give themotion to the crimp ing-dies G, and the one (L) on the center of theshaft beneath the bed operates the mechanism for feeding the slats tothe dies. The die-blocks F F, to which the crimping-dies G G aresecured, work in slots cut in the bed D, and are screwthreaded, and moveupon the rods M M whenever the latter are turned. The under side of thebed has bearings H H E E for the rods M M and the blocks I I.. Thecam-wheels 0 work in grooves in the blocks I, and give them areciprocating motion, which is imparted to the crimping-dies through therods M and the dieblocks F. The connection of these parts with eachother is plainly shown in Figs. 1 and 3. A thumb-screw, f, Fig. 4, ineach block I, bears against the rod M and prevents it from turning; butwhen it is loosened the rod may be turned by the hand-wheel N, and thedie-block F be caused to move any desired distance on the rod. By thisarrangement the distance the dies are required to approach each othercan be quickly and accurately regulated. 0 represents a feeding-plate,operating to push the slats forward to be acted upon by the dies. It issecured to the slide J, and is moved by the cam L acting upon theta-ppet-fingers K, as shown in Fig. 6.

The slats to be crimped are placed in a pile between the guides P P, andthe lowest one is caught by the feeding-plate in its forward movementand fed to the dies. 00, Fig. 3, represents the position of the slat.WVhen the feeding-plate is moved backward the next slat in the piledrops in front of it and is fed to the dies when the plate 0 movesforward. As the slat approaches the dies it pushes the crimped slatpreviously acted upon by the dies out of the way, and oif the front ofthe machine into a receiver or onto the floor. The crimping-dies slideupon adjustable rods R It, which pass through holes in the dies, asshown .in Figs. 1 and 3, and are secured to the slides S S held by theset-screws a a in the frame Q. WVhen the dies move back, after crimpingthe slat, the ends of the rods R It bear against the slat and force theends out of the dies and prevent them from sticking in the beveled facesof the dies. The pressure-guides b I), held in the adjustable bearings cc on the frame Q, bear against the upper surface of the slat between thedies, and keep it in place during the action of the dies. The guides IP, between which the slats to be crimped are piled, are adjustable onthe frame Q by means of the set-screws e 0, so that they can be readilyaltered to receive slats of any length and width.

It will beseen that the different parts of this machine are capable ofquick and accurate adjustment to receive and act upon slats of any size,and that, when so adjusted, the parts are not liable to become derangedor loosened while the machine is in operation.

The shape of the face of the dies which give the form to the ends of theslats is clearly shown in Figs. 1, 2, 3, and 5 of the drawing.

e claim as our invention- The combination of the dies G G operated bythe cams G O, with the adjusting screw-shafts M M, substantially as andfor the purpose set forth and specified.

KENDRIOK KENDAL.

Witnesses: LElVIS HENRY STARK.

GRANVILLE P. WARREN, ALFRED STORY.

